Article
Engineering, Environmental
Aino Ukkonen, Olli Sahimaa
Summary: Municipal solid waste poses various systemic challenges, and European countries are moving towards circular material use with the help of economic incentives like the pay-as-you-throw scheme. This paper introduces a model that encourages recycling through weight-based fees, ensuring fair service levels for waste management operators, and internal subsidies for efficient source separation.
Article
Green & Sustainable Science & Technology
G. Messina, A. Tomasi, G. Ivaldi, F. Vidoli
Summary: The aim of this paper is to estimate the impact of a massive implementation of PAYT schemes, by gathering information for a panel of Italian municipalities and assessing the effects of switching from PAYO to PAYT on waste generation and cost. The results show that the adoption of PAYT schemes brings a simultaneous significant reduction in both quantity and cost, especially for unsorted waste.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Giulia Romano, Lucio Masserini
Summary: This study explores the impact of pay-as-you-throw tariffs on the promotion of sustainable urban waste management. The findings indicate that implementing PAYTT effectively aligns with EU waste hierarchy policies and leads to reduced waste generation and improved separate waste collection efforts.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
Christina Emmanouil, Kalliopi Papadopoulou, Iliana Papamichael, Antonis A. Zorpas
Summary: With the increase of municipal solid waste globally, efficient waste management systems are crucial for urban areas. The optimization of waste management is important for energy and material independence, as well as the development of sustainable societies. This study investigates the public's knowledge and attitude towards a pay-as-you-throw system in Greece, providing valuable insight on public acceptance and understanding.
Article
Environmental Sciences
Wanjun Yao, Xinyu Zhou
Summary: This study investigates the willingness of Chinese urban residents to accept the pay-as-you-throw (PAYT) charging model. The results show that currently only 54.53% of urban residents are willing to accept this model. The average annual cost that residents are willing to pay for PAYT is relatively low, amounting to 58.616 RMB. The main reasons for the low acceptance of PAYT among residents include behavioral attitudes, social norms, and perceived behavioral control factors.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Eugenio Diaz-Farina, Juan J. Diaz-Hernandez, Noemi Padron-Fumero
Summary: This paper showcases how a collaboratively designed waste tariff reform can achieve a sustainable waste management system in a tourism-intensive municipality. The co-created Pay-As-You-Throw tariff meets stakeholders' demands, incentivizes waste prevention and recycling, and aligns with the principles of the EU's Circular Economy Package.
JOURNAL OF SUSTAINABLE TOURISM
(2023)
Article
Business
Cindy Xin Wang, Hong Yuan, Joshua T. Beck
Summary: This research investigates customers’ reactions to exchanges in retailing contexts where they have complete control over the final price. The study finds that despite customers’ positive attitudes towards participative pricing strategies, delegating price-setting control to customers can decrease purchase intentions and actual purchases. These effects are mediated by perceived pricing effort and moderated by customer fatigue level.
JOURNAL OF BUSINESS RESEARCH
(2022)
Article
Computer Science, Interdisciplinary Applications
Hongyu Hou, Feng Wu, Xiangyin Kong
Summary: PAYW (pay as you want) has become a popular pricing strategy for content products in practice and has received considerable attention in the literature. This paper explores the impact of competition on the value of PAYW compared to fixed pricing (FP) in a duopoly setting. The findings suggest that symmetric equilibria exist, and multiple equilibria can occur, leading to a prisoner's dilemma situation when the fairness ideal is at a medium level. The presence of network externality makes PAYW preferable under competition, and the fairness ideal has a nonmonotonic impact on social welfare.
COMPUTERS & INDUSTRIAL ENGINEERING
(2023)
Article
Business
Raghabendra P. Kc, Vincent Mak, Elie Ofek
Summary: This research examines how the timing of payment decision affects consumer payment behavior under pay-what-you-want (PWYW) pricing. The authors find that people tend to pay more after receiving the product when the product value is high, but this effect is reduced when the product value is low and reversed when the product value is sufficiently low. The experimental results support the theoretical predictions and provide evidence for the moderating effect of product value. The study also explores the payment decision timing effect in a charitable donation context and provides process evidence for the theoretical mechanism.
JOURNAL OF MARKETING
(2023)
Article
Business
Giandomenico Di Domenico, Katia Premazzi, Antonella Cugini
Summary: This study investigates the impact of the Pick-Your-Price (PYP) strategy on brand evaluations and purchase choice. It finds that placing the highest price as the default option results in negative brand attitudes, while introducing price transparency improves brand attitudes and estimated revenues. Additionally, communicating external Corporate Social Responsibility practices stimulates positive brand attitudes and higher willingness to purchase in PYP settings.
JOURNAL OF BUSINESS RESEARCH
(2022)
Article
Engineering, Environmental
Wenhua Li, Juntao Wang
Summary: This study focuses on the factors of residents' waste sorting and government intervention, providing a policy-making tool for Unit Pricing System policy, which can significantly promote waste sorting behavior, particularly in cities with lower environmental awareness.
WASTE MANAGEMENT & RESEARCH
(2022)
Article
Food Science & Technology
Camila Ferro, Gaston Ares, Jessica Aschemann-Witzel, Maria Rosa Curutchet, Ana Gimenez
Summary: Although most participants perceived low levels of household food waste, they regarded food waste at the national level to be high. They tended to see food waste as 'unavoidable' and sought rational explanations to justify their behavior. The study identified drivers related to behavioral, personal, product, and contextual factors that influence food waste practices.
FOOD RESEARCH INTERNATIONAL
(2022)
Article
Business
Shelle Santana, Vicki G. Morwitz
Summary: Gender differences and individual versus communal orientations influence payment behavior in pay-what-you-want contexts. Men, who are more self-focused, tend to pay less, while women, who are more other-focused, tend to pay more. Marketing communications can increase the salience of social payment motives to encourage higher payments from men without altering women's payment behavior.
JOURNAL OF MARKETING RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Nor Isnaeni Dwi Arista, Dwini Handayani, Ninin Ernawati
Summary: Household waste management is still a problem in various countries and regions due to different factors. Efforts to improve waste management continue, including the use of the Willingness to Pay (WTP) model. The research shows that factors such as the area of residence and income have a significant effect on WTP decisions. The study recommends using the WTP system to improve household waste management and achieve a circular economy.
Article
Business
Himanshu Rathore, Suresh Kumar Jakhar, Satish Kumar, Madhumitha Ezhil Kumar
Summary: The study found that consumers' need for cognition is related to their preference for participative pricing strategies and purchase intention, but the actual price paid does not significantly differ from the market price. Additionally, participative pricing can generate more sales volume.
JOURNAL OF BUSINESS RESEARCH
(2022)
Article
Economics
U. A. D. Prasanthi Gunawardena
Article
Agronomy
E. S. Munasinghe, V. H. L. Rodrigo, U. A. D. P. Gunawardena
EXPERIMENTAL AGRICULTURE
(2014)
Article
Environmental Sciences
E. P. N. Udayakumara, Prasanthi Gunawardena
Summary: This study evaluates the impact of soil erosion on reservoir sedimentation and economic losses in the Uma Oya watershed in Sri Lanka, proposing mechanisms and interventions for reducing these impacts. Implementation of soil and water conservation interventions can significantly decrease soil erosion rates in the watershed, resulting in economic savings.
MODELING EARTH SYSTEMS AND ENVIRONMENT
(2022)
Article
Environmental Sciences
E. P. N. Udayakumara, U. A. D. P. Gunawardena
EARTH SYSTEMS AND ENVIRONMENT
(2018)
Article
Social Sciences, Interdisciplinary
R. M. W. Rathnayake, U. A. D. P. Gunawardena
SRI LANKA JOURNAL OF SOCIAL SCIENCES
(2012)
Article
Engineering, Environmental
Xiaojian Liu, Bei Wang, Yayun Ma, Xiangyang Zhou, Juan Yang, Yuehui He, Jingjing Tang, Fanyun Su, Wan Yang
Summary: This study proposes a combined process of reduction roasting of herb-medicine residue and oxalic acid leaching to improve the recovery efficiency of lithium from spent lithium-ion batteries. By utilizing the reducing gas produced from the pyrolysis of herb-medicine residue, the layered structure of the cathode powder is destroyed and converted into Li2CO3, Ni, Co, and MnO. Additionally, selective extraction of lithium is achieved using oxalic acid, and the efficiency and kinetics of lithium extraction are improved under the combined action of herb-medicine residue and oxalic acid.
Article
Engineering, Environmental
Muxina Konarova, Nuno Batalha, Gabriel Fraga, Mohamed H. M. Ahmed, Steven Pratt, Bronwyn Laycock
Summary: This study presents a proof of concept for a technology that integrates PET recovery from mixed plastic waste and plastic pyrolysis. By depolymerizing PET into TPA using a low volatility oil as medium, it achieves low-pressure operation and a selective separation and recovery of TPA from the product mix. Full PET conversion and high TPA recovery were achieved, making it an effective solution for processing mixed waste streams and improving the yield and quality of liquid product from thermal pyrolysis compared to untreated feedstock.
Article
Engineering, Environmental
Zhenhua Sun, Jing Li, Xuejiang Wang, Siqing Xia, Jianfu Zhao
Summary: This study investigated the influence of in-situ formed MgFe2O4 on the hydrothermal treatment of swine manure. The results showed that the in-situ formation of MgFe2O4 improved the dehydration and decarboxylation of organic components in swine manure, thereby improving its carbonization degree. Furthermore, it enhanced the stabilization of heavy metals and the retention of phosphorus. MgFe2O4 modified hydrochars exhibited remarkable adsorption capacity for Pb(II) and Cu(II) without any leaching of heavy metals.
Article
Engineering, Environmental
Yijing Jiang, Boyang Leng, Jingxin Xi
Summary: The increased generation of municipal solid waste has had a significant impact on the economy, environment, and public health. The current waste treatment process has limitations. By developing a comprehensive social costing model, this study assesses the impacts of municipal solid waste management throughout its life cycle and provides policymakers with best practices and feasibility information.
Article
Engineering, Environmental
Marina Hernandes de Paula e Silva, Ricardo Coser Mergulha, Jose Geraldo Vidal Vieira, Andrea Brasco Pampanelli, Rodrigo Salvador, Diogo Aparecido Lopes Silva
Summary: This study developed and implemented a self-assessment tool to assist companies in decision-making processes for establishing circular flows based on Lean Manufacturing and Circular Economy principles. The tool utilized a maturity model and was applied to nine companies of varying characteristics. The findings revealed that certain companies showed higher maturity in water-waste and chemical-emissions management, with larger enterprises focusing on these strategies. However, many companies lacked sufficient training and employee awareness prior to seeking cleaner alternatives, and comprehensive actions to manage the product lifecycle were lacking. To address these gaps, the tool provided tailored recommendations for each company to improve their processes, products, and value chain.
Article
Engineering, Environmental
Gamze Dogdu, Turgay Pekdemir, Sanaz Lakestani, Seyda Karabork, Osman Cavus
Summary: This paper presents data on food waste associated with mini size food packaging services, highlighting the difficulties in emptying the food and consumer wastefulness as the main causes. These findings have significant implications for the sustainability of food and relevant packaging.
Article
Engineering, Environmental
Qingxia Li, Xin Kong, Yuxin Chen, Jianan Niu, Jia Jing, Jin Yuan, Yifeng Zhang
Summary: This study investigates how to enhance methane production from food waste after hydrothermal pretreatment. The results demonstrate a significant increase in methane yield when zero-valent iron and magnetite are used together, and high organic loading is favorable for methane production. Microbial diversity analysis further reveals the dominant pathways and metabolic processes involved in methane generation.
Article
Engineering, Environmental
D. H. H. Sim, I. A. W. Tan, L. L. P. Lim, E. T. Lau, B. H. Hameed
Summary: The development of controlled-release fertilizer formulation is important for preventing environmental pollution caused by nutrient leaching and volatilization. This study combined biochar-based fertilizer with encapsulation technology to improve the nutrient release mechanism. Optimal conditions for synthesizing urea-impregnated biochar (UIB) were determined using central composite design, and the release of nitrogen was described by mathematical models. Results showed that encapsulated UIB (EUIB) achieved complete release of nitrogen in water and exhibited improved water retention in sandy-textural soil. Therefore, EUIB derived from peppercorn waste has the potential to be used as a sustainable controlled-release fertilizer for agriculture.
Article
Engineering, Environmental
Yuchuan Wang, Neslihan Akdeniz
Summary: Incorporating biochar into composting systems can increase compost temperatures. This study developed a heat transfer model for a biochar-amended co-composting system and found that biochar increased thermal conductive losses but also enhanced microbial activity, resulting in an overall increase in total heat unit. When biochar was applied on the surface, it mainly functioned as an insulator.
Article
Engineering, Environmental
George Tsalis, Birger Boutrup Jensen, Jessica Aschemann-Witzel
Summary: This paper empirically explores the relationship between retail price promotions and household food waste. The results show that households with a higher proportion of discount food purchases and environmental awareness tend to waste less food, while larger households and those lacking food handling skills tend to waste more food.
Article
Engineering, Environmental
Lukas Friederici, Arne Koch, Patrick Martens, Jana Pantzke, Sebastiano Di Bucchianico, Thorsten Streibel, Christopher P. Rueger, Ralf Zimmermann
Summary: The increasing demand for lightweight materials has led to a rise in fiber-reinforced plastic (FRP) production. However, the properties and compositional range of FRPs pose challenges to recycling strategies. Pyrolysis has emerged as a promising method for separating the fibers from the polymer matrix. This study investigated the pyrolysis process using thermal analysis and high-resolution mass spectrometry, and also assessed the toxicity of the recovered fibers using an in vitro model.
Review
Engineering, Environmental
Devika Kannan, Shakiba Khademolqorani, Nassibeh Janatyan, Somaieh Alavi
Summary: This paper introduces Smart Waste Management (SWM) that applies Industry 4.0 technologies in waste management. A framework called SWM4.0 is developed, which highlights the importance of smart people, smart cities, smart enterprises, and smart factories in achieving successful waste management. The paper also suggests future research directions and managerial implications.